Sharon, these are all such strong, simple, and exceptionally chic looks. I love your trapeze tops and your fun (cool looking) loose shorts. These shapes work so well for your climate, your style, your body, your life.
You LOOK great in jeans. So that is not the issue. I think perhaps the problem is they do not feel dressy and/or feminine enough for your style? And yet they are practical for fall/winter temps? You need more casual bottoms for winter as well as skirt looks for work?
At this point I might ask myself what it is that makes me feel unfab in jeans. Is it the fabrication, level of casualness, or something else. Because if you can isolate what it is, then finding the replacement items for your closet will be easier.
If it is just a matter of needing bottoms that are practical but not as casual as jeans, trousers should do it (at least in part). You could try more interesting cuts, like slouchy track pants in a nice fabric, or similar. If jeans are not feminine enough but you still want a casual item, what about trying the skirted legging look? Or do what I did and get a casual dress that can be worn with a knit (or other) topper for added warmth, with tights.